格式化
电合成
电化学
电催化剂
材料科学
催化作用
兴奋剂
法拉第效率
分离器(采油)
化学工程
无机化学
纳米技术
化学
电极
物理化学
光电子学
热力学
物理
有机化学
工程类
作者
Shuai Yan,Peng Chen,Chao Yang,Yangshen Chen,Junbo Zhang,Anxiang Guan,Ximeng Lv,Haozhen Wang,Zhiqiang Wang,Tsun‐Kong Sham,Qing Han,Gengfeng Zheng
标识
DOI:10.1002/anie.202111351
摘要
The electrochemical CO2 conversion to formate is a promising approach for reducing CO2 level and obtaining value-added chemicals, but its partial current density is still insufficient to meet the industrial demands. Herein, we developed a surface-lithium-doped tin (s-SnLi) catalyst by controlled electrochemical lithiation. Density functional theory calculations indicated that the Li dopants introduced electron localization and lattice strains on the Sn surface, thus enhancing both activity and selectivity of the CO2 electroreduction to formate. The s-SnLi electrocatalyst exhibited one of the best CO2 -to-formate performances, with a partial current density of -1.0 A cm-2 for producing formate and a corresponding Faradaic efficiency of 92 %. Furthermore, Zn-CO2 batteries equipped with the s-SnLi catalyst displayed one of the highest power densities of 1.24 mW cm-2 and an outstanding stability of >800 cycles. Our work suggests a promising approach to incorporate electron localization and lattice strain for the catalytic sites to achieve efficient CO2 -to-formate electrosynthesis toward potential commercialization.
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